Vulnerability-Lookup

FKIE_CVE-2021-41864

Vulnerability from fkie_nvd - Published: 2021-10-02 00:15 - Updated: 2026-08-05 18:44

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.

References

URL	Tags
cve@mitre.org	https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.12	Mailing List, Patch, Vendor Advisory
cve@mitre.org	https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=30e29a9a2bc6a4888335a6ede968b75cd329657a	Mailing List, Patch, Vendor Advisory
cve@mitre.org	https://github.com/torvalds/linux/commit/30e29a9a2bc6a4888335a6ede968b75cd329657a	Patch, Third Party Advisory
cve@mitre.org	https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html	Mailing List, Third Party Advisory
cve@mitre.org	https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html	Mailing List, Third Party Advisory
cve@mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7BLLVKYAIETEORUPTFO3TR3C33ZPFXQM/	Broken Link
cve@mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LAT3RERO6QBKSPJBNNRWY3D4NCGTFOS7/	Broken Link
cve@mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYKURLXBB2555ASWMPDNMBUPD6AG2JKQ/	Broken Link
cve@mitre.org	https://security.netapp.com/advisory/ntap-20211029-0004/	Third Party Advisory
cve@mitre.org	https://www.debian.org/security/2022/dsa-5096	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.12	Mailing List, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=30e29a9a2bc6a4888335a6ede968b75cd329657a	Mailing List, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/torvalds/linux/commit/30e29a9a2bc6a4888335a6ede968b75cd329657a	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7BLLVKYAIETEORUPTFO3TR3C33ZPFXQM/	Broken Link
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LAT3RERO6QBKSPJBNNRWY3D4NCGTFOS7/	Broken Link
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYKURLXBB2555ASWMPDNMBUPD6AG2JKQ/	Broken Link
af854a3a-2127-422b-91ae-364da2661108	https://security.netapp.com/advisory/ntap-20211029-0004/	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2022/dsa-5096	Third Party Advisory

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
fedoraproject	fedora	33
fedoraproject	fedora	34
fedoraproject	fedora	35
netapp	cloud_backup	-
netapp	hci_management_node	-
netapp	solidfire	-
netapp	h410c_firmware	-
netapp	h410c	-
netapp	h300s_firmware	-
netapp	h300s	-
netapp	h500s_firmware	-
netapp	h500s	-
netapp	h700s_firmware	-
netapp	h700s	-
netapp	h300e_firmware	-
netapp	h300e	-
netapp	h500e_firmware	-
netapp	h500e	-
netapp	h700e_firmware	-
netapp	h700e	-
netapp	h410s_firmware	-
netapp	h410s	-
netapp	solidfire_baseboard_management_controller_firmware	-
netapp	solidfire_baseboard_management_controller	-
debian	debian_linux	9.0
debian	debian_linux	10.0

JSON

To clipboard

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write."
    },
    {
      "lang": "es",
      "value": "prealloc_elems_and_freelist en kernel/bpf/stackmap.c en el kernel de Linux antes de la versi\u00f3n 5.14.12 permite a usuarios sin privilegios desencadenar un desbordamiento de enteros en la multiplicaci\u00f3n de eBPF con una escritura fuera de los l\u00edmites resultante."
    }
  ],
  "id": "CVE-2021-41864",
  "lastModified": "2026-08-05T18:44:49.827",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
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          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.6,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
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        "exploitabilityScore": 3.9,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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    "cvssMetricV31": [
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        "cvssData": {
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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        "source": "nvd@nist.gov",
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  "published": "2021-10-02T00:15:07.503",
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://security.netapp.com/advisory/ntap-20211029-0004/"
    },
    {
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      "url": "https://www.debian.org/security/2022/dsa-5096"
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  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}

CVE-2021-41864 (GCVE-0-2021-41864)

Vulnerability from cvelistv5 – Published: 2021-10-01 23:46 – Updated: 2024-08-04 03:22

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2283 records in the last 180 days details

References

10 references

URL	Tags
https://git.kernel.org/pub/scm/linux/kernel/git/b…	x_refsource_MISC
https://github.com/torvalds/linux/commit/30e29a9a…	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://security.netapp.com/advisory/ntap-2021102…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST
https://www.debian.org/security/2022/dsa-5096	vendor-advisoryx_refsource_DEBIAN

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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